Question

The ceiling of Judy's living room is a square that is 15 ft long on each side. To decorate for a party, she plans to hang crepe paper around the perimeter of the ceiling and then from each corner to the opposite corner. Judy can buy rolls that each contain 20 ft of crepe paper. What is the minimum number of rolls she should buy? Show your work.

Answer 1

Given the following question:

Judy's room is a square 15 feet long on each side

One roll of crepe paper equals 20 feet

`\begin{gathered} \text{perimeter =} \\ 4* s \end{gathered}`
`\begin{gathered} 4*15=60 \\ p=60ft \end{gathered}`

The line she plans to hang the crepe paper from one corner to it's oppsite corner. So think about a X in the middle of the square. Since it's a square it will be particually smaller than the actual length of each side of the square.

`60/10=6`

Let 10 represent the length of one side of the X

Let 60 represent the perimeter

Judy will need a minimum of 6 rolls of crepe paper for this party.